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xen-devel
Re: [Xen-devel] freebsd domu 14, bad address
On 27 Feb 2007, at 14:30, Mark Williamson wrote:
I can't quite see why the traceback that the logs show would
actually be
occurring - maybe someone who has more familiarity with the code
can provide
some insight? Any clues off the top of your head?
From a quick glance through the privcmd driver (in linux-2.6-xen-
sparse/drivers/xen/privcmd/privcmd.c ) it seems that an error 14
(EFAULT) is returned by the privcmd ioctl when there is a problem on
carrying out a copy_from_user() of the arguments to the ioctl.
This ioctl is wrapped by the xc_map_foreign_*, do_privcmd and
do_xen_hypercall functions in tools/libxc/xc_linux.c . Another
possibility is in the evtchn driver (in linux-2.6-xen-sparse/drivers/
xen/evtchn/evtchn.c ), in which the evtchn_read, _write and _ioctl
functions can also return -EFAULT. This functions are also wrapped by
functions in xc_linux.c.
Hope this helps.
Regards,
Derek Murray.
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